Invention Grant
- Patent Title: Inspection method and inspection apparatus of magnetic disk
- Patent Title (中): 磁盘检查方法和检查装置
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Application No.: US13345763Application Date: 2012-01-09
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Publication No.: US08542453B2Publication Date: 2013-09-24
- Inventor: Kyoichi Mori , Masanori Fukawa
- Applicant: Kyoichi Mori , Masanori Fukawa
- Applicant Address: JP Tokyo
- Assignee: Hitachi High-Technologies Corporation
- Current Assignee: Hitachi High-Technologies Corporation
- Current Assignee Address: JP Tokyo
- Agency: Jianq Chyun IP Office
- Priority: JP2011-003566 20110112
- Main IPC: G11B5/02
- IPC: G11B5/02

Abstract:
An inspection method and inspection apparatus of a magnetic disk are provided. A gliding test and a certification test are performed at the same time by simultaneously moving a head for the certification test and a head for the gliding test with a heat distortion utilization mechanism (a micro thermal actuator) along a recording surface of the magnetic disk during rotation at a predetermined revolving speed. A flying height of the head for the gliding test is determined according to a revolving speed of the disk. When the flying height of the head for gliding test is determined according to the revolving speed at the certification test, the head for the gliding test is adjusted to a desired height by adjusting a variation of the heat distortion utilization mechanism disposed on the head for the gliding test. The gliding and certification inspections can be performed at the same time.
Public/Granted literature
- US20120176877A1 INSPECTION METHOD AND INSPECTION APPARATUS OF MAGNETIC DISK Public/Granted day:2012-07-12
Information query
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